Re: redundant mail servers
Florian Friesdorf said :
>> I just read through the drbd homepage and HOWTO. Sounds very good to
>> me. Can you recommend it? Did anyone experience any strange/bad
>> behaviour using it?
Well I do. Here we have a failover 2-node cluster serving NFS over DRBD
and (surprisingly) it works like a charm. I guess it would be no major
hassle to setup a mailserver in the same fashion...
A few caveats though :
- Use a dedicated ethernet link for replication
- Imagine and plan every possible failure cases and create a backup
plan for each.
>> From what I've read, I'm going to try last stable version 0.5.8 and
>> therefore downgrade to 2.2.x kernels (at the moment I'm running 2.4.x)
I'm using 0.58 here (because we *had* to use 2.2), and it works, but
Phillip Reisner (DRBD's Author) strongly suggest upgrading. And I
believe he's right. Whith 0.58 you might have very weird problems if the
sync link goes down. It is said that 0.6.* are better... Didn't check.
Nicolas
--
nicolas@bouthors.org -- http://nicolas.bouthors.org/ -- +33 6 2071 6234
Administateur Systèmes et Réseaux -- GHS -- 38, Rue du Texel
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